Pharmaceutical Injection Device Hinged Cover Mechanism
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Solution Overview
Problem
Conventional pharmaceutical injection devices are inconvenient due to the removable cover for the injection needle mounting portion, which can be lost, making them less user-friendly.
Innovation Solution
A pharmaceutical injection device design where the cover for the injection needle mounting portion is permanently attached to the main body case, allowing it to be opened and closed while still attached, preventing loss and enhancing usability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the cover is removably mounted to the main body case, then the injection needle mounting portion can be covered to prevent soiling, but the cover may be lost, making the device inconvenient to use
Solution Approach 1:
The cover is designed to be dynamically openable and closeable while remaining attached to the main body case through a hinge mechanism. This allows the cover to transition between covering and exposing the injection needle mounting portion without being removed, thus preventing loss while maintaining protection functionality.
Solution Approach 2:
The cover is divided into a first cover portion and a second cover portion connected by a hinge mechanism. This segmentation allows independent movement of each portion, enabling the cover to open and close while remaining attached to the main body case, resolving the contradiction between protection and convenience.
2Object-affected harmful factors
If the cover is removably mounted to the main body case, then the injection needle mounting portion can be covered, but the cover can be detached and lost
Solution Approach 1:
The hinge mechanism provides a dynamic connection that maintains continuous attachment between the cover and main body case while allowing controlled movement. This ensures the cover cannot be accidentally lost while still permitting intentional opening and closing for access to the injection needle mounting portion.
Solution Approach 2:
The hinge mechanism acts as an intermediary element between the cover and main body case, providing a reliable yet flexible connection. This intermediary allows the cover to remain attached during normal use while enabling the necessary opening and closing motions for operational access.
3Ease of operation
If the cover is permanently attached to the main body case, then the cover cannot be lost, but the injection needle mounting portion may be harder to access
Solution Approach 1:
The hinge mechanism creates a dynamic attachment system that appears permanent but allows controlled movement. The cover can be easily opened and closed without requiring detachment tools or complex operations, maintaining simplicity while ensuring the cover cannot be lost.
Solution Approach 2:
Dividing the cover into two portions connected by a hinge allows the mounting portion to be easily accessed by simply opening the cover, without requiring removal of the entire cover assembly. This segmentation maintains ease of access while providing secure attachment.
Data Source
AI summary
This pharmaceutical injection device may be provided with a main body case, a pharmaceutical syringe mounting portion, a piston, a piston feed screw or the like, and a cover. At a first end, the main body case may have an injection needle mounting portion to which an injection needle is mounted. The pharmaceutical syringe mounting portion may be provided inside the main body case, and a pharmaceutical syringe may be mounted thereto. The piston may be provided movably with respect to the pharmaceutical syringe that is mounted to the pharmaceutical syringe mounting portion. The piston feed screw or the like drives the piston. The cover may be provided on the first end side of the main body case and operates to open and close the injection needle mounting portion.